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Test those batteries!

BAT393 universal analogue battery tester

If you are using wireless microphones then failing batteries can be a big issue – even a ‘new’ box of batteries can let you down as we found at a recent visit to a school Nativity. The wireless microphones were behaving erratically and we found the ‘new’, in date batteries were producing just 1/3 of their rated voltage

This handy Mercury BAT393 battery tester checks most batteries telling you when to discard each one – a wise investment at just £2.25 + VAT

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